A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.
NSN 4140-01-328-8614
NSN 5950-00-965-5030
NSN 5996-00-186-8709
NSN 6685-01-206-5218
NSN 5990-01-463-2279
NSN 5945-01-484-9325
NSN 6685-01-387-0618
NSN 5998-00-703-3593
NSN 5990-01-041-4351
NSN 5835-00-034-4976
NSN 5965-00-150-1144
NSN 5935-00-699-4032